Recent primary production increases in arctic lakes
A new application of reflectance spectroscopy enables inferences of lake sediment chlorophyll a concentrations and hence of historical trends in lacustrine primary production. In a survey of six arctic lakes on Baffin Island (Nunavut, Canada), pronounced increases of spectrally-inferred chlorophyll...
| Main Authors: | , , , |
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| Format: | Other/Unknown Material |
| Language: | English |
| Published: |
2005
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| Subjects: | |
| Online Access: | https://era.library.ualberta.ca/items/3e2cc24c-826b-41a6-8473-79241ca3ca31 https://doi.org/10.7939/R38Z81 |
| Summary: | A new application of reflectance spectroscopy enables inferences of lake sediment chlorophyll a concentrations and hence of historical trends in lacustrine primary production. In a survey of six arctic lakes on Baffin Island (Nunavut, Canada), pronounced increases of spectrally-inferred chlorophyll a concentrations are consistently expressed in sediments deposited during the 20th century. Climate warming appears to be increasing both aquatic chlorophyll a production and its sequestration to sediments, as these lakes enter new biological regimes that are largely unique in the context of the late Holocene. |
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